| 摘要 |
The invention relates to a method for setting a CRBT, including: initiating a call to a called terminal and receiving a CRBT sent from a CBC, by a calling terminal in a communication network; during the process of playing the CRBT or the communication process or after the call is ended, authenticating the calling terminal by the communication network in response to a CRBT setting request message sent by the calling terminal or the called terminal actively or upon an inquiry, so as to judge whether the calling terminal activated a CRBT service; if it is judged that the calling terminal has not activated a CRBT service, sending, by the communication network, a CRBT service activation message to the calling terminal to instruct the calling terminal to subscribe the CRBT service, and then subscribing, by the calling terminal, the CRBT service through a response to the message; and if it is judged the calling terminal already activated the CRBT service, or the CRBT service is activated by the calling terminal responding to the CRBT service activation message, instructing, by the communication network, the CBC to set a CRBT same as or similar to or associated with the CRBT received by the calling terminal into a CRBT library for the calling terminal.
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